Add GML2 MultiLineString serialiazer

test/spec/ol/format/gml.test.js

@@ -254,6 +254,37 @@ describe('ol.format.GML2', function() {
 
       expect(node).to.xmleql(ol.xml.parse(expected));
     });
+
+    it('can serialize a Multi Line String', function() {
+      var expected =
+        '<layer xmlns="http://www.openlayers.org/" fid="1">' +
+        '  <geometry>' +
+        '     <MultiLineString xmlns="http://www.opengis.net/gml" ' +
+        '                 srsName="EPSG:4326">' +
+        '       <lineStringMember>' +
+        '         <LineString srsName="EPSG:4326">' +
+        '           <coordinates ' +
+        '                    decimal="." cs="," ts=" ">' +
+        '              2,1.1 4.2,3' +
+        '           </coordinates>' +
+        '         </LineString>' +
+        '       </lineStringMember>' +
+        '      </MultiLineString>' +
+        '    </geometry>' +
+        '  </layer>';
+
+      var feature = new ol.Feature({
+        geometry: new ol.geom.MultiLineString([[[1.1, 2], [3, 4.2]]])
+      });
+      feature.setId(1);
+      var objectStack = [{
+        featureNS: featureNS,
+        srsName: 'EPSG:4326'
+      }];
+      format.writeFeatureElement(node, feature, objectStack);
+
+      expect(node).to.xmleql(ol.xml.parse(expected));
+    });
   });
 });